That wind effect is indeed very cool, it really looks like she's in a dust cloud (or dancing through fog, whatever ) That is also quite a nice dynamic pose you got going there 8D

I think to make this (and future pixel arts) better would be to remember to clean up your lines so they look not as jagged. Generally pixel art lineart is only 1px big - the lines can be done with a bigger brush/pencil to nice effect, it just makes it harder to clean up and smoothen. Look here at this tut to see what i mean (since i suck at explaining lol) --> [link]

Also i suggest maybe shading your pixel arts more, that will give them more depth and character